In an experiment, a set of readings are obtained as follows: 1.24… | JEE Main 2026 Physics PYQ

MCQEasyJEE Main 2026 · 28 January, Shift 2Significant Figures & Error Analysis

In an experiment, a set of readings are obtained as follows: $1.24~\text{mm},\ 1.25~\text{mm},\ 1.23~\text{mm},\ 1.21~\text{mm}.$ The expected least count of the instrument used in recording these readings is _____ mm.

A
$0.01$
B
$0.1$
C
$0.05$
D
$0.001$

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